Firearm



April 7, 1931. E. HQLEK 1,799,981

FIREARM Filed June 18, 1929 2 Sheets-Sheet l Emanufl Holek INVENTOR *BY C ATTORNEY April 7, 1931.

E. HOLEK FIREARM Filed June 18, 1929 2 Shets-Sheet 2 Emanuel INVENTOR BY WJL ATTORNEY Patented Apr. 7, 1931 TNT OFFICE EMANUEL HOLEK, OF BRUNEI, CZECHQSLOVAKIA, ASSIGNOR TO THE FIRM CESKO- SLOVEN'SKA ZBROJ'OVKA AKCIOVA SLOVAKIA Application filed June 18, 1929, Serial No.

This invention relates to fire-arms and consists essentially in providing a special construction of fire-arms in which the barrel is axially displaced with respect to the other parts of the fire-arm so that the rifleman may keep the fire-arm in its normal position permitting to conveniently take aim atan object, even in case the rifleman carries a gas-mask or a steel-helmet.

A further'feature of this invention consists in a novel construction of the piston-rod which forms part of the gas-pressure operated charging device for the purpose of preventing objectional strains from being imposed upon said piston-rod.

A further feature of this invention consists therein that the gas-cylinder of the gaspressure operated charging device is made integral with the carrier for the gun-sight to permit both of said parts of being easily exchanged by a single manipulation.

A number of constructions of fire-arms according to this invention are shown in the accompanying drawings in which Fig. 1 is p a diagrammatic top-view'showing a fire-arm of ordinary construction, Fig. 2 a similar top-view of a fire-arm constructed according to this invention in contra-distinction to Fig. 1, Fig. 3 a detail-view of the gas-piston together with the piston-rod, Fig. 4 a view, partially in section, of the carrier for the gun-sight and the gas-cylinder, Fig. 5 a sidevview of said carrier and the gas-cylinder, Fig. 6 a longitudinal central section and Fig- 7 a top-view, respectively of Fig. 5, Fig. 8 adetail view showing the sight-carrier of Fig. 5 as seen from the right-hand side, Fig. .9 a section along line aa. of Fig. 5, Figs. 10 and '11 sections along lines 12-12 and 40 c--c, respectively, taken on Fig. 6, Fig. 12 a view and partial section of the connecting member which is arranged intermediate the sight-carrier and the gas-cylinder with a small protective tube serving for the protection of the upper partofjthe gunestock. I

SPOLECNOST V BRNE, 0F BRUNN, CZEGHO- FIREARM 371,789, and in Czechoslovakia May 10,1929.

, In Figs. 1 and 2, thebarrel of the fire-arm is shown at 1, the central piece at 2 and the gun-stock at 8. As may be seen from Fi 1, the three aforementioned parts of the %rearm are positioned in a common plane of symmetry s's,such as is ordinarily the case in known constructions of fire-arms. .Ac cording to Fig. 2 the part of the fire-arm which consists of the gun-stock- 2 and the central piece 3 is inclined towards the bar rel 1 at an angle a which preferably amounts to about 1 as I have ascertained by experiments. This axial displacement between the barrel and gun-stock and the central piece is so small that the lateral dimensions of the fire-armwill not essentially be increased and that in addition to this rifleman will not need to bring portions of its head above the buttend of the fire-arm during taking aim at an object. It will therefore be possible for the rifleman to properly take aim by merely slightly placing his cheek against the gunstock, even if the rifleman wears a gas-mask or a steel-helmet. The position in which the rifleman may hold the fire-arm will now be the normalposition and theaforementioned axial displacement of the several parts of the fire-arm will have no influence whatever upon its manipulation. r

In Fig. 3 the piston-rod is shown at 4, the 75 gas-piston at 5 and the handle or knob at 6. The piston-rod, for reasons of construction, had heretofore ordinarily been of somewhat bent conformation which during firing had resulted into bending strains upon the pistonrod. In the construction according to' my invention as shown in Fig. 3 the gas-pressure operated charging device now comprises a piston-rod composed of a central essentially straight portion a, b, 0, (Z extending along the greater part of the length of said rod, while the front part of said rod is of round cross-section in proximity to the piston as indicated at g, and of rectangular cross-secti'on inthe rear part. as indicated at g By $0 providing a piston-rod of this cross-sectional conformation, the gas-pressure which is exerted upon the front-piston surface f will be mechanically transmitted in a very favorable way in form of compressive strains to the piston-rod and from here to the breech or breech-carrier (not shown in the drawing). Furthermore, by constructing the piston-rod in the afore-described manner with a central pressure transmitting part, it will be possible to construct the piston-rod as economically as possible, because the gaspressure will always act upon the pistonrod in the direction otthe axis. Reducing the strength of the piston-rod, apparently will result in a saving of material and in consequence thereof also in a reduction of the weight of the fire-arm. By reason of the herein described essentially straight contormation .ofthe piston-rod and its varying cross-section the mode of guiding the gaspiston in the gun-stock will be greatly simplified. i

In Fig. 4 the piston-rod is again shown at 4;, the piston at 5 and the gas-cylinder'at 6, The gas-cylinderEaccording to Fig. 4: is made integralwith the sight-carrier which permits to conveniently exchange the gas-cylinder together with the sight-carrier in case of excessive wear of the barrel of the fire-arm. According to my invention the gas-cylinder 6 is connected by means of an extension 6 with the end'7 of the sight-carrier 7 Moreover, the gas-cylinder is of alength which is smaller than the stroke of the gas-piston, this permitting convenient cooling of the gas-cylinder andrender ing soiling or sooting impossible so that a sticking of the piston to the cylinder will be eiiectively prevented. In Figs. 57 the' sight-carrier 7 is providedat itsend with an extension 8 permitting the reception of the gun-sight proper within the dovetail-shaped (groove shown at the lefthandjendlof Figs. 5,, 6 and 7, the gun-sight itself being omitted in the drawing.

The bayonetecarnier isshown at 10. An aperture I5 is provided in the wall which separates the gas-cylinder 6 and its extension '6 from the sight-carrier r7 and'7", said aperture permitting passage of the powder-gas from the barrel .into the gas-cylinder. A bore 16 is provided inthe said extension 6 of the gaspressure cylinder 6 and a bolt maybe rotated in said bore in order to adjust a regulating device whichisnot shown in the drawing. After the barrel of the fire-arm has wornouttocsuchan extent that it can .no more be used, the portion of the fire-arm which consists of the gas-cylinder and the sight-carrier may now .be taken :off by a single manipulationandmountedupon another fire-arm. In

order to permit the gas-piston to be easily introduced into the gas-cylinder, the frontside'o f the latter is provided withvan oblique 0. cal ur a a ind ated at 17. The

the

gas-pressure cylinder 6 together with the extension 6 provided thereon is displaced with respect to the sight-carrier 7 by an than the the piston.

According to the construction shown in Fig. 12 the piston-rod is loosely surrounded by a small tube 18 which serves for protecting the upper parts of the the action of the hot discharge gases.

By reason of the fact that thegas-cyl-in-der present case .is of relatively short length, said gas-cylinder may conveniently besubjected to treatment by heat, such as for instance to a hardening process, or some other process which serves for inlcreasingathe mechanical strength of said cylinder. The relatively small length of the gas-cylinder which is due to the atoredescribed mode of congun-stock 19 against 7 nectin-g said cylinder with the end of the 5 sight-carrier will further greatly simplify,

the manufacture and lties for COOllIlg.

I claim:

provide ample possibil 1. A hand or gas-pressure opera-ted firearm, comprlsmg 1n combinatlon, a gun-stock,

a central piece, and a barrel, said gun-stock,

and said central piece being positioned at an angle with respect to said barrel so as to perm'i-t the ,rifleman to take aim, even when wearing a gas-mask or a steel-helmet, by merely laying his cheek against the butt-end of the gun-stockwithout bringingportions of his head-above said butt-end.

'2. A gas pressureoperated fire-arm as specified by claim 1, "comprising a gas-cylinder, a piston, andapiston-rod having a varying cross-section and including a central member extending over the greater part of the length of said piston-rod to permit transmission of the gas-pressure which acts upon said pistoninthe form'of c'ompressivestra-ins imposed uponsaid piston-rod.

3. A fire-arm .asspecifiedby claimlfliaving'a gas-cylinder which is'integral With a sight-carrierattached to the barrel and permitting convenient exchange ofsaid gas-cyl- A inder together with said sight-carrier.

4. A fire-arm as specified by claim 1, having agas-cylinder which-is adapted to form a restfor the butt-end of the fire-arm and connected with a sight carrier means of an extension provided on said gas-cylinder.

5. A firearm a Specified Claim in which the gas-cylinder is adapted to-form .a rest for the butt-end otthe fire-arm and provided with anextension,'saidgas-cylinderbein'g connected with 't'he end of rier by means of said "extension.

' 6. A fire-arm as specified by cla'iini comsaid sight-carprising agas-cylinder, an extension thereon,

a sight-carrier integral with said gas-cylinder, said gas-cylinder together with said extension being angularly displaced with respect to said sight-carrier.

7 A fire-arm as specified by claim 1 comprising a gas-cylinder, an extension thereon, a piston, a piston rod having a Varying cross-section and including a central member extending over the greater part of the length of said piston rod and a tube-shaped sight carrier integral With said gas-cylinder, said gas-cylinder together With said extension being angularly displaced with respect to the axis of the tube of the sight-carrier and to the longitudinal axis of the barrel.

In testimony whereof I aflix my signature.

EMANUEL HOLEK. 

